Multiple Erspan Sessions; High Availability; Licensing Requirements For Erspan; Prerequisites For Erspan - Cisco Nexus 5600 Series Configuration Manual

Configuring ERSPAN

Multiple ERSPAN Sessions

For information about shutting down ERSPAN sessions, see
Session, on page

High Availability

The ERSPAN feature supports stateless and stateful restarts. After a reboot or supervisor switchover, the
running configuration is applied.

Licensing Requirements for ERSPAN

The following table shows the licensing requirements for this feature:
Product
Cisco NX-OS

Prerequisites for ERSPAN

ERSPAN has the following prerequisite:
•You must first configure the Ethernet interfaces for ports on each device to support the desired ERSPAN
configuration. For more information, see the Interfaces configuration guide for your platform.

Guidelines and Limitations for ERSPAN

ERSPAN has the following guidelines and limitations:
• A maximum of 16 active sessions are supported. They can be ERSPAN sessions only or a mixture of
• When a FEX Host Interface (HIF) is used as a SPAN source, the TCAM resource is available for a
• The maximum number of ports for each ERSPAN session is 128.
OL-31641-01
212.
ERSPAN and SPAN sessions. This limitation is for ports which do not use a separate Logical Interface
(LIF) for egress multicast traffic.
maximum of 14 sessions. In such a scenario, an additional TCAM entry has to be programmed to handle
egress multicast traffic on a Network Interface (NIF) port.
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
Multiple ERSPAN Sessions
Shutting Down or Activating an ERSPAN
License Requirement
ERSPAN requires no license. Any feature not
included in a license package is bundled with the
Cisco NX-OS system images and is provided at no
extra charge to you. For a complete explanation of
the Cisco NX-OS licensing scheme, see the License
and Copyright Information for Cisco NX-OS Software
available at the following URL:
www.cisco.com/en/US/docs/switches/datacenter/sw/
4_0/nx-os/license_agreement/nx-ossw_lisns.html.
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